I'm not a huge Julia fan either. She's kind of a ho (c'mon, she gets around.... dated all three doctors??) and seems to be more concerned about what's good for her than for her family. She let Matt date that Nazi chick and let Sean look like the bad guy when he spoke up about it. And I agree with hle_625's theory about why she's moving back in with Sean. There's something wrong with the baby (Down syndrome? Some kind of physical deformity?) and doesn't want to deal with it on her own. Again, she's not taking Sean's feelings into account, she's only worried about her situation.
Matt is a punk, I agree with that too. The kid is messed up. I blame Eva for that though. (Anybody think she'll show up again next season?) It was nice seeing him and Sean talking to each other like humans in the last episode though, there was no screaming, name calling or snide comments.
Anyway... AWESOME show. I never miss an episode. I think I may get the DVD set, and even though he can be a jerk, I can't get enough of Christian!